“电力拖动控制系统”课程实践教学改革探讨

针对"电力拖动控制系统"课程实践教学现状,进行教学改革。从课程综合实验、计算机仿真训练、实践创新训练和毕业设计等几个方面,探讨了如何提高实践性教学环节的质量、提高学生实践动手能力和培养创新型人才,教学改革取得了一定的效果。     

基于“非零起点”计算机公共基础课程教学的研究

随着计算机技术的发展,需要培养大批创新型人才,目前高校学生计算机基础已不再是"零起点",因而计算机公共基础课程教学的改革和研究备受关注。本文从管理层、教师层、学生层和实践层的"四个层面"对计算机公共基础课程的"非零起点"教学进行了探讨和研究,并以湖南工程学院计算机公共基础课程教学实践,提出相应的解决措施或方案,努力探索一条培养学生自主学习,培养创新人才的新思路。     

高职“网页设计与制作”课程的教学研究与实践

本文针对高职院校培养技能应用型人才的实际需要,对"网页设计与制作"课程从课堂理论教学、实践教学和课程考核方式等方面进行了研究与探索,并取得了良好的教学效果。     

“计算机操作系统”课程教学创新实践

传统的教学模式已不能适应现代"计算机操作系统"课程的教学需求。本文在该课程以往教学实践和经验的基础上,对"操作系统"课程的教学实践活动进行了总结,并提出了建立长效"实践教学链"的新的教学模式,以培养本科生学习"操作系统"课程的兴趣,从而提高他们的实践创新能力。     

计算机网络基础“课程实践”教学环节的设计与实施

在阐述"课程实践"概念的内涵和"课程实践"对高职学生综合运用知识能力培养的作用之基础上,对在计算机网络基础课程教学中的尝试应用强化"课程实践"的多重能力教学模式进行了介绍:即了解教学对象,确定教学内容和教学组织形式,实施强化"课程实践"的多重能力教学模式,同时分析教学中存在的问题,以期更多的教师关注"课程实践"环节,尝试通过强化"课程实践"环节提升高职学生的多重能力,进而提高教学质量。     

软硬协同、虚实兼顾的本科生自主创新实践能力培养

根据"互联网+"和新工科背景下高校实践育人工作的新要求,分析本科生自主创新能力培养中需要解决的关键问题,提出"互联网+"背景下软硬协同、虚实兼顾的本科生自主创新实践能力培养的新模式,阐述通过构建开放式自主虚拟仿真实践云平台,大力培养和深入挖掘本科生的自主创新能力和潜力,结合哈尔滨工业大学的教学实际,说明该模式对提高本科生自主创新能力起到的作用。     

研究生课程大数据与云计算技术教学改革研究

本文介绍我校计算机专业研究生课程"大数据与云计算技术"的教学改革探索、实践与成效。首先对计算机专业研究生课程教学存在的问题进行分析,其次基于创新教育理念修订了研究生课程"大数据与云计算技术"的教学大纲,接着从培养科研创新能力和工程实践能力的角度改革了课程教学方法,其中着重探讨了研讨式教学法在该课程教学中的实际应用以及线上线下相结合的工程实践,从而构建多元化的课程考核方式。     

单片机课程仿真软件案例教学的研究与探讨

针对当今高校单片机课程仿真软件案例教学的应用现状以及单片机理论课程的相关特点,本文主要是研究对单片机课程与仿真软件结合以来的案例教学,对学生进行理论教学的同时还要培养学生的实践能力以及创新能力。     

来华留学生全英文单片机课程的建设与改革

针对单片机课程的教学效果难以满足来华留学生培养需要的现状,提出根据来华留学生的学习基础和学习能力,对教材和讲义、实践教学环境、网络教学环境和题库进行建设,采用做中学和阶段性考核方式提高留学生的学习兴趣和主动性,融合虚拟仿真、实验箱实验和实训教学方法提升留学生的工程实践能力,结合沈阳航空航天大学留学生教学实践,具体阐述留学生单片机课程的建设与改革过程,并说明教学效果。     

基于软件仿真的“电力电子技术”课程教学方法改革

“电力电子技术”课程理论性较强,传统的教学模式偏重公式推导,学生感觉比较抽象,较难理解。为体现应用型本科高校的特点,培养学生实践能力和动手能力,结合我院实际情况,将MATLAB软件引入课程教学过程,对电力电子典型电路进行仿真研究,建立仿真模型,观察实验现象。同时结合网络教学,可达到提高教学质量,适应人才培养的需要。     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.     

Editorial: Special issue on recent advances in hybrid control theory and applications

正The demands of a rapidly advancing technology for faster and more accurate controllers have always had a strong influence on the progress of automatic control theory.In recent years control problems have been arising with increasing frequency in widely different areas,which cannot be addressed using conventional control techniques.The principal reason for this is the fact that a highly competitive economy is forcing systems to operate in regimes where     

Information for Authors

正Aim The Journals of Zhejiang University-SCIENCE(A/B/C)areedited by the international board of distinguished Chinese andforeign scientists,and are aimed to present the latest devel-opments and achievements in scientific research in China andoverseas to the world’s scientific circles,especially to stimulateand promote academic exchange between Chinese and for-eign scientists everywhere.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.